Messages in this thread | | | From | Anup Patel <> | Date | Mon, 29 Aug 2022 08:29:45 +0530 | Subject | Re: [PATCH] cpuidle: riscv-sbi: Fix CPU_PM_CPU_IDLE_ENTER_xyz() macro usage |
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Hi Palmer,
On Mon, Jul 18, 2022 at 2:16 PM Anup Patel <apatel@ventanamicro.com> wrote: > > Currently, we are using CPU_PM_CPU_IDLE_ENTER_PARAM() for all SBI HSM > suspend types so retentive suspend types are also treated non-retentive > and kernel will do redundant additional work for these states. > > The BIT[31] of SBI HSM suspend types allows us to differentiate between > retentive and non-retentive suspend types so we should use this BIT > to call appropriate CPU_PM_CPU_IDLE_ENTER_xyz() macro. > > Fixes: 6abf32f1d9c5 ("cpuidle: Add RISC-V SBI CPU idle driver") > Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Can you please take this patch through the RISC-V tree ?
Regards, Anup
> --- > drivers/cpuidle/cpuidle-riscv-sbi.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/cpuidle/cpuidle-riscv-sbi.c b/drivers/cpuidle/cpuidle-riscv-sbi.c > index 1151e5e2ba82..33c92fec4365 100644 > --- a/drivers/cpuidle/cpuidle-riscv-sbi.c > +++ b/drivers/cpuidle/cpuidle-riscv-sbi.c > @@ -97,8 +97,13 @@ static int sbi_cpuidle_enter_state(struct cpuidle_device *dev, > struct cpuidle_driver *drv, int idx) > { > u32 *states = __this_cpu_read(sbi_cpuidle_data.states); > + u32 state = states[idx]; > > - return CPU_PM_CPU_IDLE_ENTER_PARAM(sbi_suspend, idx, states[idx]); > + if (state & SBI_HSM_SUSP_NON_RET_BIT) > + return CPU_PM_CPU_IDLE_ENTER_PARAM(sbi_suspend, idx, state); > + else > + return CPU_PM_CPU_IDLE_ENTER_RETENTION_PARAM(sbi_suspend, > + idx, state); > } > > static int __sbi_enter_domain_idle_state(struct cpuidle_device *dev, > -- > 2.34.1 >
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